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Metal silencing hood for pipeline of petrochemical device

A petrochemical device and sound insulation cover technology, which is applied in the direction of metal layered products, pipe components, chemical instruments and methods, etc., can solve the problems of petrochemical pipeline sound insulation measures, noise hidden dangers in the plant, etc., and improve the overall sealing performance of the sound insulation cover Overall, good sound absorption performance, easy disassembly and reinstallation

Inactive Publication Date: 2012-07-11
江苏云才材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Existing oil refineries and other factories equipped with petrochemical pipeline equipment usually do not take sound insulation measures for petrochemical pipelines, making noise in the plant a major hidden danger

Method used

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  • Metal silencing hood for pipeline of petrochemical device
  • Metal silencing hood for pipeline of petrochemical device
  • Metal silencing hood for pipeline of petrochemical device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Such as Figure 1 to Figure 3 As shown, 1.5mm thick 316 stainless steel is selected as the sound insulation board 1, which is processed into a semicircular shell by stamping, and the surface density of 1.5mm thick 316 stainless steel is 11.7g / cm 2 , so its sound insulation is about 24.3dB(A). Next, the damping material 2 is coated on the inner wall of the stainless steel sound insulation board 1, and the thickness of the damping layer is about 0.5 mm. Then pave 316 stainless steel fiber mat 3 on the inner wall of the shell, with a pore size of 20 μm, a porosity of 85%, and good flame retardancy. After the stainless steel fiber mat 3 is installed, add glass fiber sound-absorbing material 5, the thickness of the glass fiber sound-absorbing material is about 50mm, and the density is 200g / cm 3 , the average sound absorption coefficient is 0.75. In order to fix the sound-absorbing material and fiber felt in the sound insulation shell. When the sound insulation cover 9 is...

Embodiment 2

[0031] Such as Figure 1 to Figure 3 As shown, a 2mm thick galvanized iron sheet is selected as the sound insulation board 1, which is processed into a semicircular shell by stamping, and the surface density of the 2mm thick galvanized iron sheet is 15.6g / cm 2 , so its sound insulation is about 30dB(A). Next, the damping material 2 is coated on the inner wall of the stainless steel sound insulation board 1, and the thickness of the damping layer is about 1 mm. Then pave 316 stainless steel fiber mat 3 on the inner wall of the shell, with a pore size of 20 μm, a porosity of 85%, and good flame retardancy. After the stainless steel fiber felt 3 is installed, add the fiber sound-absorbing material 5 rock wool, the thickness of the rock wool sound-absorbing material is about 60mm, and the density is 240g / cm 3 , the average sound absorption coefficient is 0.80. In order to fix the sound-absorbing material and fiber felt in the sound-insulating shell, the metal protective perfora...

Embodiment 3

[0033] Such as Figure 1 to Figure 3 As shown, a 2mm thick galvanized iron sheet is selected as the sound insulation board 1, which is processed into a semicircular curved pipe shell by stamping, and the surface density of the 2mm thick galvanized iron sheet is 15.6g / cm 2 , so its sound insulation is about 30dB(A). Next, the damping material 2 is coated on the inner wall of the stainless steel sound insulation board 1, and the thickness of the damping layer is about 1 mm. Then pave 316 stainless steel fiber mat 3 on the inner wall of the shell, with a pore size of 25 μm, a porosity of 80%, and good flame retardancy. After the stainless steel fiber felt 3 is installed, add the fiber sound-absorbing material 5 rock wool, the thickness of the rock wool sound-absorbing material is about 60mm, and the density is 240g / cm 3 , the average sound absorption coefficient is 0.80. In order to fix the sound-absorbing material and fiber felt in the sound-insulating shell, the metal protec...

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Abstract

The invention discloses a metal silencing hood for a pipeline of a petrochemical device, which relates to the field of industrial noise abatement, in particular to a metal silencing hood for abating noise of delivery pipelines in the petrochemical industry. The metal silencing hood mainly comprises a metal sound insulating board, a metal fiber felt, inorganic fibrous sound-absorbing cotton, a metal protective net and a damping layer, wherein the damping layer, the metal fiber felt and the inorganic fibrous sound-absorbing cotton are sequentially arranged on the inner wall of the metal sound insulating board, and the metal protective net is arranged outside the metal sound insulating board and mounted outside the pipeline of the petrochemical device together with the metal sound insulating board. The metal silencing hood has fireproof, flame-retardant and explosion-proof performances and quite high sound insulation, can be conveniently detached in daily maintenance and outage for maintenance in the petrochemical industry, and can be conveniently reinstalled.

Description

technical field [0001] The invention relates to the field of industrial noise control, in particular to a sound insulation cover for noise control of pipelines in the petrochemical industry. Background technique [0002] Pipelines in the petrochemical industry are mainly used to transport high-speed and high-pressure gases, liquids, and high-speed gas-solid mixture materials. The on-site noise of some pipelines can be as high as 125dB(A). 1. Under the environment of 94dB(A), the employees of the rebuilt enterprise can only work for 1 hour at the maximum per day, and the noise level in the working area should not be higher than 115dB(A). Therefore, in order to protect the health of on-site operators, it is necessary to control pipeline noise. [0003] Due to the analysis of the structure and working conditions of the petrochemical plant, the pipeline of the plant can generate such high-intensity noise. The main reasons are as follows: [0004] (1) Noise is also generated wh...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16L55/033B32B15/02B32B15/14B32B3/12
Inventor 刘忠军胡苗
Owner 江苏云才材料有限公司
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